December weather forecastNgonini, Swaziland
December
Weather in December
As the year ends, December experiences the highest average temperatures reaching up to 29.1°C (84.4°F) in Ngonini, Swaziland. The accumulated humidity peaks during this month, further accentuating the tropical climate. December also accounts for the highest amount of rainfall registered at 94mm (3.7"). Although daylight increases, the percentage of cloud cover also increases, resulting in fewer clear skies. With the UV Index still geared at 6, it is essential to continue sun safety practices.Temperature
Ngonini's warmest month, December, generally records average temperatures ranging from a high of 29.1°C (84.4°F) to a low of 18.8°C (65.8°F).Heat index
December's mean heat index is estimated at a tropical 34°C (93.2°F). Undertake special precautions, the probability of heat exhaustion and heat cramps is high. Prolonged activity may provoke heatstroke.Always consider that heat index estimations are for light winds and places in the shade. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
Humidity
In December, the average relative humidity is 76%.Rainfall
December is the month with the most rainfall. Rain falls for 20.5 days and accumulates 94mm (3.7") of precipitation.Daylight
With an average of 13h and 42min of daylight, December has the longest days of the year.On the first day of December, sunrise is at 04:54 and sunset at 18:32. On the last day of the month, sunrise is at 05:05 and sunset at 18:49 SAST.
Sunshine
In Ngonini, the average sunshine in December is 8.7h.UV index
January through March, September through December, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 6 in December translates into this advice:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ngonini, Swaziland
- Average high temperature in December: 29.1°C
The warmest month (with the highest average high temperature) is December (29.1°C).
The month with the lowest average high temperature is July (23°C).
- Average low temperature in December: 18.8°C
The months with the highest average low temperature are January and February (19°C).
The coldest month (with the lowest average low temperature) is June (10.6°C).
Average pressure in December
Ngonini, Swaziland
- Average pressure in December: 1014.1mbar
The month with the highest atmospheric pressure is July (1024.1mbar).
The month with the lowest atmospheric pressure is January (1013.7mbar).
Average wind speed in December
Ngonini, Swaziland
- Average wind speed in December: 7.1km/h
The windiest month (with the highest average wind speed) is September (8.5km/h).
The calmest months (with the lowest average wind speed) are March and May (6.4km/h).
Average humidity in December
Ngonini, Swaziland
- Average humidity in December: 76%
The months with the highest relative humidity are January, February and March (78%).
The months with the lowest relative humidity are August and September (56%).
Average rainfall in December
Ngonini, Swaziland
- Average rainfall in December: 94mm
The wettest month (with the highest rainfall) is December (94mm).
The driest month (with the least rainfall) is July (2mm).
Average rainfall days in December
Ngonini, Swaziland
- Average rainfall days in December: 20.5 days
The month with the highest number of rainy days is December (20.5 days).
The month with the least rainy days is June (1.8 days).
Average daylight in December /
Average sunshine in December
Ngonini, Swaziland
- Average daylight in December: 13h and 42min
The month with the longest days is December (Average daylight: 13h and 42min).
The month with the shortest days is June (Average daylight: 10h and 36min).
- Average sunshine in December: 8h and 42min
The month with the most sunshine is February (Average sunshine: 9h and 18min).
The month with the least sunshine is April (Average sunshine: 6h and 24min).
Average sunshine days in December
Ngonini, Swaziland
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is June (27.3 days).
The month with the least sunshine days is December (7.5 days).
Average UV index in December
Ngonini, Swaziland
- Average UV index in December: 6
The months with the highest UV index are January, February, March, September, October, November and December (UV index 6).
The months with the lowest UV index are April, May, June, July and August (UV index 5).
Average cloud cover in December
Ngonini, Swaziland
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 13).
Average visibility in December
Ngonini, Swaziland
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).
